JP2011010569A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To raise the safety of operation by preventing scattered grains caused by the raising operation by a raising device at reaping operation from being scattered to a steering part at the rear side.SOLUTION: A threshing apparatus (4) and a grain-storing apparatus (5) are mounted on the upper part of a carriage (3) equipped with a traveling apparatus (2) so as to be arranged in the right and left direction. The steering part (6) is mounted on a site at the front side of the grain-storing apparatus (5) on the upper part of the carriage (3), and a reaping apparatus (7) is installed in the front side of the steering part (6) so as to be freely lifted and lowered. A cover (47) for covering the range from the upper rear sides to the upper front sides of a plurality of the raising devices (39) installed in the reaping apparatus (7) is also installed. The cover (47) is constituted of a rear-part cover (47b) covering the range from the upper parts to the upper rear sides of a plurality of the raising devices (39), and a front-part cover (47a) freely movable from the position overlapping with the rear-part cover (47b) to the upper front sides of the raising devices (39).

Description

  The present invention relates to a combine.

  Conventionally, a combine is mounted with a threshing device and a grain storage device arranged side by side on the upper part of a chassis equipped with a traveling device, and a steering unit is installed on the front part of the grain storage device at the upper part of the chassis. A reaping device is provided in front of the part so as to be movable up and down.

  In such a harvesting operation with a combine, a large amount of dust is generated when harvesting the culm with the harvesting device or when the harvested culm is transported to the threshing device, and this dust deteriorates the hygienic environment of the control unit. was there.

Then, the technique which provides a dustproof cover which is illustrated to patent document 1 is commercialized.
That is, a technique is known in which a dustproof cover is provided that covers the upper part of a plurality of pulling devices provided in the reaping device to the supply port of the threshing device at the upper rear.

Japanese Utility Model Publication No. 3-112222

However, the problem that occurs at the time of harvesting by a combine is not only the problem of dust that occurs at the time of harvesting and transporting.
That is, when raising the planted culm with the pulling device, the tip of the planted culm is squeezed up by the action of the pulling device, so that the grain of the pointed part is shed and scattered to the rear control unit. , May hit the pilot directly. When such a grain hits a driver's eyes, it is dangerous, and there has been a demand for a technique for preventing the grain from scattering when it is raised.

In order to solve the above-mentioned problems, the present invention takes the following technical means.
That is, the invention described in claim 1 includes a threshing device (4) and a grain storage device (5) arranged side by side on the top of a chassis (3) provided with a traveling device (2), and the chassis (3) A steering part (6) is mounted on the front part of the grain storage device (5) in the upper part, and a cutting device (7) is provided in front of the steering part (6) so that it can be raised and lowered. The cutting device (7) The combine is characterized in that a cover (47) is provided to cover a range from the upper rear to the upper front of the plurality of pulling devices (39) provided.

  As a result, during the cutting operation by the cutting device (7), even if the tip portion of the planted cereal is squeezed by the pulling action of the pulling device (39) and shedding occurs, the scattering of the grain is covered (47 ) And will not scatter to the rear control section (6).

  In the invention according to claim 2, the cover (47) is superposed on the rear cover (47b) covering the range from the upper part to the upper rear of the plurality of pulling devices (39) and the rear cover (47b). The combine according to claim 1, characterized by comprising a front cover (47a) which is movable from the position to the upper front of the pulling device (39).

  As a result, if the front cover (47a) is moved to the upper front side of the pulling device (39), the front cover (47a) and the rear cover (47b) cause the graining by the pulling action of the pulling device (39). It becomes possible to prevent the cereal grains from scattering to the control section (6). Further, the rear dustproof cover (47b) can prevent the dust generated on the rear side of the pulling device (39) from flowing to the control section (6).

  According to a third aspect of the present invention, the combine according to the second aspect is characterized in that when the front cover (47a) is moved forward, the front cover (47a) is inclined forward and downward. It is what.

  As a result, even when the front cover (47a) is moved forward, the front cover (47a) is inclined forwardly downward, so that the field of view immediately before the reaping device (7) can be maintained well. .

  According to a fourth aspect of the present invention, the rear end portion of the rear cover (47b) is provided extending to the vicinity of the front portion of the control portion (6). This is a combine.

As a result, the front cover (47a) and the rear cover (47b) can more reliably prevent dust generated from the reaping device (7) from flowing toward the control section (6).
According to a fifth aspect of the present invention, there is provided the combine according to the second, third or fourth aspect, wherein a drive device (52) for moving the front cover (47a) back and forth is provided. Is.

  Accordingly, it is possible to easily implement a configuration in which the front cover (47a) is remotely operated and automated for the front and rear movement.

  According to invention of Claim 1, by providing the cover (47) which covers the range from the upper back of the several raising apparatus (39) with which the cutting apparatus (7) was equipped to the upper front, by the cutting apparatus (7) Even when the tip of the planted culm is squeezed by the pulling action of the pulling device (39) during reaping operation and the grain breaks off, the scattering of the grain is prevented by the cover (47), and the rear maneuvering It will not scatter to a part (6), and the safety | security of work can be improved.

  According to invention of Claim 2, in addition to having the effect of the invention of Claim 1, the cover (47) is a rear cover that covers a range from the upper part of the plurality of pulling devices (39) to the upper rear. 47b) and a front cover (47a) that is movable forward from the position overlapping the rear cover (47b) to the upper front of the pulling device (39), so that the granulation is caused by the pulling action of the pulling device (39). Can be prevented from scattering to the control unit (6), and dust generated on the rear side of the pulling device (39) is prevented from flowing to the control unit (6) by the rear dust cover (47b). The operator's work safety and sanitary environment can be maintained well.

  According to the invention described in claim 3, in addition to the effects of the invention described in claim 2, when the front cover (47a) is moved forward, the front cover (47a) is inclined forward and downward. As a result, even if the front cover (47a) is moved forward, the front cover (47a) is inclined forward and downward so that the field of view immediately before the cutting device (7) can be maintained well. Thus, the efficiency of the cutting operation can be increased.

  According to the invention of claim 4, in addition to the effects of the invention of claim 2 or claim 3, dust generated from the cutting device (7) by the front cover (47a) and the rear cover (47b). Can be reliably prevented from flowing toward the control section (6), and the sanitary environment of the operator can be well maintained.

  According to the invention of claim 5, in addition to the effects of the invention of claim 2 or claim 3 or claim 4, it is easy to construct a remote operation or automating of the front cover (47a) for back and forth movement. The efficiency of the cutting work can be increased.

Side view for explaining the combine Side view for explaining the combine Top view of the combine Combine front view Side view for explaining the combine Top view of the combine Combine front view Block circuit diagram Block circuit diagram Side view for explaining the combine Top view of the combine Combine front view Side view for explaining the combine Top view of the combine Combine front view Side view for explaining the combine Top view of the combine Combine front view

An embodiment of a work vehicle according to the present invention will be described by exemplifying a triple cut combine.
As shown in FIGS. 1 to 4, the combine body 1 includes a threshing device 4 and a grain storage device 5 arranged side by side on the top of a chassis 3 having a traveling device 2. A control unit 6 is mounted on the front part of the grain storage device 5, and a cutting device 7 is provided in front of the control unit 6 so as to be movable up and down.

  The traveling device 2 includes a plurality of wheels 9 pivotally supported on left and right wheel frames 8 integral with the chassis 3 and left and right wheel sprockets (not shown) driven from a transmission case 10 attached to the front of the chassis 3. ) And the crawler 11 is wound around. A hydrostatic continuously variable transmission 12 for driving input is attached to the top of the mission case 10. The hydrostatic continuously variable transmission 12 is driven by an engine 13 mounted on the control unit 6.

The threshing device 4 is composed of an upper handling chamber provided with a handling drum and a lower sorting chamber equipped with a red pepper and a swing sorting shelf, and is driven by an engine 13.
The grain storage device 5 is formed into a container shape using a synthetic resin as a raw material, a kernel for conveying a grain is provided at the bottom, and a milling cylinder 14 is provided with a cereal helix following the spiral at the outer rear part. Is vertically installed, and a telescopic discharge cylinder 15 is connected to the upper end portion of the cerealing cylinder 14 so as to be able to swing up and down.

  The steering unit 6 has a cockpit 17 attached to an upper portion of an engine cover 16 that surrounds the engine 13, and a steering lever 19 is provided at a position on the outer side of the upper surface of the front operation post 18 that stands in front of the cockpit 17. A meter panel 20 is provided at the center of the front operation post 18, and a main transmission lever 22 for shifting the hydrostatic continuously variable transmission 12 is provided on a side operation panel 21 disposed on the left side of the cockpit 17. And a sub-transmission lever 23 for switching the sub-transmission gear in the transmission case 10 and a mowing / threshing clutch lever 24 for turning on / off the mowing device 7 and the threshing device 4. A handle 25 is provided above the upper surface of the front operation post 18, and a side mirror 26 and a right turn signal 27R are attached to the outer end of the handle 25. The left turn signal 27 </ b> L is attached to the left front portion of the threshing device 4.

The configuration of the reaping device 7 will be described.
As shown in FIGS. 1 and 2, a suspension base 28 is attached to the upper portion of the transmission case 10, and the rear end portion of the cutting main frame 29 is pivotally supported on the suspension base 28 so as to be rotatable up and down. In addition, the transmission case 30 is raised from the rear end portion of the cutting main frame 29 upward, and a supply conveyance device 31 that is driven through the transmission case 30 is provided. The supply transport device 31 includes a lag type tip transport device 32 and a chain-type stock transport device 33, and handles the tip transport device 32 and the stock transport device 33 by integrally moving up and down. The depth is adjusted. The harvesting main frame 29 is a cylindrical member with a transmission shaft built therein, and a hydraulic cylinder 34 for driving the lifting and lowering is provided between an intermediate portion of the harvesting main frame 29 and the chassis 3.

  Then, a lower gear case 35 in the left-right direction is attached to the front end portion of the cutting main frame 29 extending forward and downward via a transmission case 34a refracted in an L shape in a side view, and from the front portion of the lower gear case 35 Four weed pipes 36 are extended forward. A weed body 37 for weeding planted cereals is attached to the tip of the weed pipe 36. Three pulling transmission cylinders 38, 38, 38 having transmission shafts built up from the left and right end portions and the left and right center portions of the lower gear case 35 are set up, and three groups are provided at the upper ends of the pulling transmission cylinders 38, 38, 38 The upper back side of the pulling devices 39, 39, 39 is fixed. The pulling devices 39, 39, 39 are configured by winding an endless chain that supports a large number of lugs 40 between an upper drive sprocket and a lower roller. The lower parts of the pulling devices 39, 39, 39 are fixed to the intermediate portion of the weed pipe 36 via a support member 41.

  Further, a clipper-shaped cutting blade device 42 is attached to the front portion of the lower gear case 35 in the weed pipe 36. On the upper side of the cutting blade device 42, there are provided a stir-up star wheel 43 driven from the lower gear case 35, a scavenging device 44 and a stock transport chain 45. In this configuration, the cereal is delivered from the rear end of the stock transport chain 45 to the start end of the supply transport device 31.

  Next, the cover 47 that covers the range from the upper rear to the upper front of the three pulling devices 39 provided in the reaping device 7 will be described. The cover 47 is a resin plate that is divided into a front cover 47a and a rear cover 47b that are divided into front and rear parts.

  First, the lower part of the support frame 46 is attached to the upper rear surface of the pulling device 39, and the rear lower part of the rear cover 47b is fixed to the upper end part of the support frame 46. In this state, the rear cover 47b is set to a longitudinal length and a lateral width that cover a range from the upper part of the three pulling devices 39 to the upper rear.

  The rear cover 47b is formed into a U-shaped cross-section with its left and right ends folded downward, and front and rear sliding guide rails 48, 48 having a U-shaped cross-section are attached to the lower left and right ends of the rear cover 47b.

  In addition, left and right support stays 49, 49 is welded across the two upper and lower sides of the square-shaped refracting portion, and the left and right support stays 49, 49 are rotated around the axis P in the left-right direction by rotating the lower ends of the left and right support arms 50, 50. Support the shaft freely.

  The upper ends of the left and right support arms 50, 50 are connected by a rod 55 to be reinforced, and the left and right side portions on the front side of the front cover 47a are connected to the upper ends of the left and right support arms 50, 50. It is pivotally attached around the axis Q in the direction. The left and right support arms 50, 50 and the rod 55 form a so-called gate shape and pass above the three pulling devices 39, so that they do not interfere with the grain transportation.

  The left and right rollers 51, 51 are pivotally attached to the left and right sides of the rear portion of the front cover 47a with a left and right rotation shaft, and the left and right rollers 51, 51 are attached to the lower portions of the left and right ends of the rear cover 47b. It puts in the guide rails 48 and 48. Thus, the front cover 47a is supported by the reaping device 7 so as to be movable back and forth by the left and right support arms 50 and 50 and the left and right rollers 51 and 51.

  With this configuration, when the front cover 47a is moved backward, the front cover 47a enters the lower side of the rear cover 47b, and when the front cover 47a is moved forward, the rear part of the front cover 47a is rear cover. While maintaining the polymerization state with 47b, the upper part of the pulling device 39 is moved forward. By moving the front cover 47a forward, the front cover 47a moves toward the front according to the position and inclination of the sliding guide rails 48, 48 and the position of the axis P and the axis Q of the support arms 50, 50. The structure is inclined forward and downward.

  In this way, by providing the cover 47 covering the range from the upper rear to the upper front of the plurality of pulling devices 39 provided in the cutting device 7, planting is performed by the pulling action of the pulling device 39 during the cutting operation by the cutting device 7. Even if the tip of the cereal is squeezed and threshing occurs, the scatter of the cereal is prevented by the cover 47 and does not scatter to the rear maneuvering section 6, thereby improving the safety of the work. Further, a rear cover 47b that covers the range of the cover 47 from the upper part to the upper rear side of the plurality of pulling devices 39, and a front cover 47a that is movable from the position overlapping the rear cover 47b to the upper front of the pulling device 39, Therefore, the grain shed by the pulling action of the pulling device 39 can be prevented from scattering to the control unit 6, and the dust generated on the rear side of the pulling device 39 can be prevented by the rear dustproof cover 47b. 6 can be prevented, and the operator's work safety and hygienic environment can be maintained well. Further, when the front cover 47a is moved forward, the front cover 47a is inclined forward and downward, so that even if the front cover 47a is moved forward, the front cover 47a is inclined forward and downward. By doing so, the field of view immediately before the reaping device 7 can be maintained satisfactorily, and the efficiency of the reaping work can be increased. Further, the front cover 47a and the rear cover 47b can more reliably prevent dust generated from the reaping device 7 from flowing toward the control unit 6 and can maintain a good hygiene environment for the operator.

  Further, in addition to the above-described configuration, an electric motor (driving device) 52 is fixed to the pulling transmission cylinder 38 at the left end, and the front end portion of the driving arm 53 that is rotated by being driven by the electric motor 52 and the left supporting arm. 50 bases are connected by a rod 54. With this configuration, when the electric motor 52 is driven, the support arm 50 rotates back and forth via the drive arm 53 and the rod 54, and the front cover 47a moves back and forth.

  With this configuration, it is possible to easily implement a configuration in which the front cover 47a is moved back and forth remotely and automated, and the efficiency of the cutting operation can be increased. In the above embodiment, the cover 47 is not limited to being integrated in the left-right direction, but may be divided into a plurality of parts in the cutting width direction, and the divided covers may be configured to be individually movable back and forth. .

  Further, if a side cover (not shown) for covering the left and right support arms 50, 50 from the outside is provided, adjacent planted cereals will not be caught on the left and right support arms 50, 50, and cutting work will be carried out. Can be carried out smoothly, and safety is increased.

As shown in FIGS. 5 to 7, the moving structure of the front cover 47 a by the electric motor 52 may be changed.
That is, the upper end portion of the support frame 46 attached to the upper rear surface of the pulling device 39 is connected to the upper end portion of the reinforcing frame 56 raised from the upper end portion of the pulling transmission cylinder 38, and is bent from the connecting portion in a side view. The motor support frame 57 is raised, and the electric motor 58 is attached to the upper end of the motor support frame 57. In this embodiment, the front cover 47a is superposed on the upper side of the rear cover 47b, and the front end portion of the drive arm 59 driven and rotated by the electric motor 58 is located at the center in the left-right direction on the upper surface of the front cover 47a. The shaft is engaged with the elongated hole 61 in the vertical direction of the fixed support portion 60. With this configuration, the center portion in the left-right direction of the front cover 47a is driven, and the front cover 47a can be smoothly moved back and forth. In addition, since the electric motor 58 is disposed at the center in the left-right direction of the cover 47 and above the cover 47, the electric motor 58 does not hinder the cereal conveyance, and the electric motor 58 is removed from the control unit 6. Will not hinder your vision.

As shown in FIG. 8, the operation of the electric motors 52 and 58 may be automated.
That is, on the input side with respect to the controller 62, a cocoon length detection sensor 63 provided on the back side of the pulling device 39 for detecting the tip height of the planted cereal cocoon, and a dust attached to the lower surface of the cover 47. A dust detection sensor 64 for detecting, a cutting height sensor 65 for detecting the raising / lowering position of the cutting device 7 with respect to the chassis 3, a vehicle speed sensor 66 for detecting the traveling speed of the combine, and a sub-shift for detecting the switching position of the sub-shift lever 23. The position detection sensor 67 is connected, and the electric motor 52 to the electric motor 58 and the dustproof fan drive motor 68 are connected to the output side thereof. The dust-proof fan 69 driven by the dust-proof fan drive motor 68 is attached to the upper part of the right support arm 50 and blows the lower side of the cover 47 toward the inside of the cutting width.

  With the above configuration, when the cutting height sensor 65 detects that the cutting device 7 has been raised to the non-cutting work height, a drive output is made from the controller 62 to the electric motor 52 to the electric motor 58, and the front cover 47a is moved backward. Move to and stop. That is, in the non-reaping work state in which the reaping device 7 is raised, the front cover 47a is retracted to improve the forward and lower visibility, and the safety when traveling on the road or turning the headland can be improved.

  When the culm length detection sensor 63 detects that the planted culm is long (height is high), an output is made from the controller 62 to the electric motor 52 to the electric motor 58, and the front cover 47a moves forward. Stop. In other words, when the planted culm is long, the amount of grain to be shattered increases due to the action of the pulling device 39. In this case, the front cover 47a automatically moves forward so that the grain is scattered. Can be prevented and the operability is improved.

  Further, when the auxiliary shift position detection sensor 67 detects that the auxiliary transmission lever 23 has been switched to the high speed side, an output is made from the controller 62 to the electric motor 52 to the electric motor 58, and the front cover 47a moves backward. Then stop. That is, in the state in which the auxiliary transmission lever 23 is switched to the high speed side, no cutting operation is performed, so that the rear cover 47a can be automatically moved rearward to improve the front view.

  Further, when the vehicle speed sensor 66 detects that the traveling speed of the combine exceeds the set speed, an output is made from the controller 62 to the electric motor 52 to the electric motor 58, and the front cover 47a moves backward and stops. . That is, since the cutting operation is not performed in a state where the traveling speed exceeds the set speed, the front view can be improved by retracting the front cover 47a.

  In addition, it replaces with the said cocoon length detection sensor 63, a grain scattering detection sensor is connected, and when it is detected that the amount of grain scattering has exceeded the set amount, an output is sent from the controller 62 to the electric motor 52 to the electric motor 58. The front cover 47a may be configured to move forward. The grain scattering detection sensor is attached to the lower surface side of the cover 47.

  Further, when a handle depth sensor for detecting the handle depth is connected in place of the rod length detection sensor 63, the controller 62 is used when the tip of the culm detected by the handle depth sensor is handled deeply. It is good also as a structure which outputs to the electric motor 52 thru | or the electric motor 58, and moves the front cover 47a ahead.

  Further, as shown in FIG. 9, in addition to the block circuit of FIG. 8, a front cover position sensor 70 for detecting the movement position of the front cover 47a is connected to the input side of the controller 62. When it is detected that the vehicle has moved forward to the set position, the controller 62 outputs a drive output to the dust-proof fan drive motor 68 to drive the dust-proof fan 69, while the front cover 47a is moved backward to the set position. When the movement is detected, the drive output from the controller 62 to the dustproof fan drive motor 68 is cut off, and the dustproof fan 69 may be stopped. This eliminates the need to bother to drive the dustproof fan 69, improving operability.

  As shown in FIGS. 1, 2, and 4, left and right work lights 71, 71 are attached to the left and right sides of the rod 55 that connects the upper ends of the left and right support arms 50, 50. , 71 may irradiate the front of the reaping device 7. Accordingly, the work lights 71 and 71 can be arranged at the foremost position on the upper part of the reaping device 7, and the efficiency of nighttime reaping work is increased by irradiating the front uncut grain culm.

As shown in FIGS. 10 to 12, instead of the cover 47 made of the above-described plate body, a roll screen cover may be used.
That is, the upper end portion of the support frame 46 attached to the upper rear surface of the pulling device 39 and the upper end portion of the reinforcing frame 56 raised from the upper end portion of the pulling transmission cylinder 38 are connected, and the support member 72 is moved forward from the connecting portion. And the rotating shaft 74 of the roll screen 73 made of a flexible sheet is supported on the front end portion of the support member 72. The drawing screen end of the roll screen 73 is locked to a rod 55 that connects the upper ends of the left and right support arms 50, 50, and the left and right support arms 50, 50 are moved forward by driving the electric motors 52 to 58. When rotated, the end portion of the roll screen 73 is pulled forward, and the upper front of the pulling device 39 can be covered by the pulled screen. In addition, the drawn screen is configured to tilt forward and downward as it is pulled out, so that it does not interfere with the forward view. Further, the drive control of the electric motors 52 to 58 is the same as that in the above-described embodiment.

  Further, as shown in FIGS. 13 to 15, a cover 47 having a predetermined front-rear length and left-right width that covers the upper rear from the upper front of the pulling device 39 is divided into a right cover 47R and a left cover 47L. May be provided.

  That is, the upper end portion of the support frame 46 attached to the upper rear surface of the pulling device 39 is connected to the upper end portion of the reinforcing frame 56 raised from the upper end portion of the pulling transmission cylinder 38, and the left and right connecting portions are connected in the left-right direction. The left cover 47L is fixed to the frame 75. A left and right guide rail 76 is fixed to the upper surface of the left cover 47L, and rollers 77, 77 attached to the lower surface side of the right cover 47R are placed and supported on the guide rail 76. Thereby, the right cover 47R can slide in the left-right direction on the upper side of the left cover 47L.

  Further, as shown in FIGS. 16 to 18, a cover 47 having a predetermined front-rear length and left-right width that covers the upper front and rear of the pulling device 39 is divided into a right cover 47R and a left cover 47L. The right cover 47R and the left cover 47L may be coupled to be rotatable about the axis F in the front-rear direction.

  That is, the upper end portion of the support frame 46 attached to the upper rear surface of the pulling device 39 is connected to the upper end portion of the reinforcing frame 56 raised from the upper end portion of the pulling transmission cylinder 38, and the left and right connecting portions are connected in the left-right direction. The left cover 47L is fixed to the frame 75. The left end portion of the right cover 47R is pivotally attached to the right end portion of the left cover 47L with a longitudinal axis F so as to be rotatable up and down.

2 traveling device 3 chassis 4 threshing device 5 grain storage device 6 control unit 7 mowing device 39 pulling device 47 cover 47a front cover 47b rear cover 52 drive device

Claims (5)

  The threshing device (4) and the grain storage device (5) are mounted side by side on the top of the chassis (3) with the traveling device (2), and the grain storage device (5) at the top of the chassis (3) is mounted. A steering part (6) is mounted on the front part, and a cutting device (7) is provided in front of the steering part (6) so as to be movable up and down, and a plurality of pulling devices (39) provided in the cutting device (7) are provided. A combine comprising a cover (47) covering a range from the upper rear to the upper front.   A rear cover (47b) that covers the range extending from the upper part of the plurality of pulling devices (39) to the upper rear side, and an upper front of the pulling device (39) from a position overlapping the rear cover (47b). The combine according to claim 1, characterized by comprising a front cover (47a) which is movable to the rear.   The combine according to claim 2, wherein when the front cover (47a) is moved forward, the front cover (47a) is inclined forward and downward.   The combine according to claim 2 or 3, wherein a rear end portion of the rear cover (47b) is provided to extend to the vicinity of the front portion of the control portion (6).   The combine according to claim 2, 3 or 4, further comprising a drive device (52) for moving the front cover (47a) back and forth.

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